40204899639 has 8 divisors (see below), whose sum is σ = 59562814320. Its totient is φ = 26803266408.

The previous prime is 40204899619. The next prime is 40204899641. The reversal of 40204899639 is 93699840204.

40204899639 is a `hidden beast` number, since 40 + 2 + 0 + 489 + 96 + 39 = 666.

40204899639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40204899639 - 2²³ = 40196511031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40204899619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744535152 + ... + 744535205.

It is an arithmetic number, because the mean of its divisors is an integer number (7445351790).

Almost surely, 2^40204899639 is an apocalyptic number.

40204899639 is a deficient number, since it is larger than the sum of its proper divisors (19357914681).

40204899639 is a wasteful number, since it uses less digits than its factorization.

40204899639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489070366 (or 1489070360 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 40204899639 in words is "forty billion, two hundred four million, eight hundred ninety-nine thousand, six hundred thirty-nine".